radio problems

i've got a 1996 cavalier convertible with 132,000 miles on it and every now and then the radio will cut out no matter if u are lisiting to a cd or the radio it just randomly cuts out. i was thinking that there might be a short in the wires but i wasnt for sure. if it is a short how would i go about fixing that and if its not what could be some other possibilities for this. thanks for any help.

start at the back of the radio and follow the wires till the end, looking for a short the entire way, but its a stock radio thats 11 years old, that also could just be the problem

well i know its not the stock raido but i dont know how old the one the previous owners put but thanks for the help ill check it out asap and update the condition